Let's divide 637190 by 20
Let's see how many times 20 fits into 637190.

Step 1:
The number 20 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 20

Moving on to step 2:
20 goes into 63 3 times with a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 60 from 63 and we're left with 3.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 20

Going ahead to step 3:
When dividing 37 by 20, we get 1 with a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 31.0
If we subtract 20 from 37, we get 17.
Bring next digit (1) of the dividend behind the 17 and repeat the process: 171 / 20

Moving on to step 4:
If we divide 171 by 20, we get 8 and a remainder of 11.
Use 8 as the next digit of our solution. 
Result so far: 318.0
Subtract 160 from 171 to get 11.
Include the next digit (9) from the dividend after 11, then repeat: 119 / 20

Moving on to step 5:
If we divide 119 by 20, we get 5 and a remainder of 19.
Use 5 as the next digit of our solution. 
Result so far: 3185.0
Subtract 100 from 119 to get 19.
Bring next digit (0) of the dividend behind the 19 and repeat the process: 190 / 20

Going ahead to step 6:
If we divide 190 by 20, we get 9 and a remainder of 10.
Use 9 as the next digit of our solution. 
Result so far: 31859.0
If we take 180 away from 190, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 7:
20 goes into 100 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 31859.5
The remainder is 0 after subtracting 100 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 31859.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 31859.5
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 31859.5 with a remaining 0.0.